Materials Literature
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In the present study, novel biocomposites with chopped jute fibers and thermosetting polycardanol were prepared using compression molding technique for the first time. Prior to biocomposite fabrication, jute fiber bundles were surface-treated at various concentrations using 3-glycidoxypropyltrimethoxy silane (GPS) and…
The process streams in the forest industry contain a large amount of hemicelluloses that today ends up in the wastewater. This is an unfortunate loss of a renewable raw material. The hemicelluloses can be isolated from the process stream by using membrane filtration in a process that produces purified water as a by-pr…
The effect of the catalyst composition and temperature on the cationic polymerization of isoprene in the presence of the catalytic system TiCl4-trichloroacetic acid was examined. The molecular heterogeneity, microstructure, and some properties of the resulting cationic polymer were determined.
Abstract In this work, we studied nanocrystalline LIGA Ni-2.6 at.% Fe and Ni-5.6 at.% Fe with an average grain size of 10 nm. Microtensile samples were produced by the LIGA process including direct current electrodeposition. Microstructures and mechanical properties were investigated in the as-deposited state as well…
A controlled-humidity sample environment has been constructed, allowing bulk powder samples undergoing humidity-induced phase transitions and reactions to be studied via in situ neutron diffraction. Associated developments in data collection and analysis permit this to be achieved without the use of D(2)O.
The cohesion in the material (BDTA)(2)[Co(mnt)(2)] () is analyzed in the light of experimental data and ab initio calculations (BDTA = 1,3,2-benzodithiazolyl, and mnt(2-) = maleonitrildithiolate). It is demonstrated that the duality of the thiazyl radical BDTA as cation and ligand stems from the competition between th…
We present a construction of a mathematical model of an interfacial microstructure (i.e., microstructure forming at the phase interface between austenite and martensite) in a single crystal of Cu-Al-Ni shape memory alloy. In the first part of the article, the experiment is briefly outlined and the compatibility of the…
Poly(3-hexylthiophene) (P3HT):single walled carbon nanotube (SWNT) and poly(3-octylthiophene) (P3OT):SWNT thin films and bulk heterojunction solar cells were fabricated with 0, 1, and 2 wt % of SWNTs. The current density in P3HT is found to be higher than that of P3OT by an order of magnitude at 5 V. Hole mobility in…
The boundaries of the V14O6 + V x O z two-phase region in the V-O system at temperatures from ≃ 1050 to ≃ 1650 K have been determined experimentally. The V-O phase diagram has been refined in the range 25–50 at % oxygen using structural and microstructural data for vanadium oxides containing less than 50 at % oxygen i…
In order to improve the fracture toughness of intrinsically brittle ceramics, it is essential to expand the frontal process zone (FPZ) ahead of a crack tip. Nanocomposites proposed by Niihara utilize dislocations generated around the dispersed nano-sized particles in matrix and expand the FPZ. In this paper, we discus…
Materials used for biomedical applications are required to have suitable surface properties since they depend more on the surface properties than on the bulk properties. Surface properties greatly influence the cell adhesion and its behavior either directly by guiding cell spreading or indirectly by controlling protei…
The hydrothermal technique was applied to the syntheses of ternary metal sulfides, AgCuS and Ag3CuS2, using silver, copper, and sulfur powders as starting materials. AgCuS was obtained as a single phase when the starting ratio of Ag:Cu:S was 0.9:1.1:1 in water above 120°C for 10 h except for synthesis condition at 120…
The electrical conductivity of electroconductive adhesives, prepared from polyurethane resins filled with the modified graphite was studied in this paper. The types of modified graphite were named: nanoscale graphite (NanoG); reduced NanoG (RNG); and oxidized NanoG (ONG). It was found that the electrical conductivity…
The conformational behaviour in aqueous solution of the EgadMe complex, a conditional gadolinium-based contrast agent sensitive to beta-galactosidase enzymatic activity, is investigated by means of ab initio calculations and classical molecular dynamics simulations. Furthermore, force field parameterization of gadolin…
Phase equilibria between the α (A2), α′ (B2) and γ (A1) phases in the Fe–Rh binary system were investigated using electron probe micro-analysis (EPMA) and differential scanning calorimetry (DSC) techniques. The A2/B2 order-disorder transformation temperature was also examined by a transmission electron microscope (TEM…
The effect of physical properties represented by viscosity and surface tension of liquid spreading on coated papers was investigated. Two substrates of different surface roughness were used to study the spreading behaviour of silicon oil and glycerine/water solutions in terms of contact angle, wetted drop base area an…
The carbonate co-precipitation route was applied for batch La[sub]{0.85}Sr[sub]{0.15}MnO[sub]{3} (LSM) preparation as an alternative synthesis method to the solid-state reaction. Because co-precipitation is a wet-chemistry solution process, the maximum LSM homogeneity was achieved. The microstructural characteristics,…
Current empirical formulae for design of concrete elements under impact loading are based on tests carried out on reinforced concrete elements with longitudinal reinforcement and they are applicable only to such elements.The influence of pre-stressing or transverse reinforcement is not taken into account.The aim of th…
To develop biocompatible polymer modification method on a quantum dot (QD) surface, we have studied poly(2-methacryloyloxyethyl phosphorylcholine) (poly(MPC)) grafting on trioctylphosphine oxide (TOPO)-coated QD (CdSe/ZnS) surface using new strategy with a double functional reversible addition-fragmentation chain tran…
The effects of antioxidants (gallic acid (GA), propyl gallate (PG) and butyl hydroxyanisole (BHA)) on the mechanical properties, water solubility and melting point temperature (Tm) of rice flour/ cassava starch film blends with sorbitol were investigated. All films forming a solution were casted and dried at room temp…